Brisbane, California Weather
Bay laurel fragrance sweetens shade. Day 89 of spring. Read this microseason across nine climate regions →
Brisbane weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 16Foggy——66°55°—
- WednesdayJun 17Foggy——70°57°+4°
- ThursdayJun 18Foggy——68°56°-2°
- FridayJun 19Overcast——67°59°-1°
- SaturdayJun 20Overcast——67°57°0°
- SundayJun 21Overcast——70°56°+3°
- MondayJun 22Mostly Clear——69°56°-1°
AQI 46 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 13.0 µg/m³ (AQI 58), ratio 0.66 with 12 mph wind — characteristic of long-range haze transport rather than a local source.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 36 now. With UV 9.4 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 32 around 1 PM.
- Present
- AQI 36
- UV peak
- 9.4 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 32
PM × Wind × Precip
PM2.5 at 13.0 µg/m³ (AQI 58), ratio 0.66 with 12 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.66
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- transport
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
Cut your thistles before St. John, you will have two instead of one.
- Moonrise
- 7:09 AM
- Moonset
- 9:54 PM
- In sign
- ♋︎ Cancer
Bay laurel fragrance sweetens shade
Brisbane at a glance
- Today vs. normal: 11°F below the seasonal normal for this latitude
- Last frost: April 2 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Brisbane
- Tue66°55°2%
- Wed70°57°2%
- Thu68°56°1%
- Fri67°59°6%
- Sat67°57°7%
- Sun70°56°2%
- Mon69°56°2%
- Tue74°57°2%
- Wed73°57°2%
- Thu74°56°2%
- Fri68°55°0%
- Sat67°57°0%
- Sun67°57°0%
- Mon70°56°0%
- Tue69°55°0%
- Wed67°56°3%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 16, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
Microseason · June 16–20
Bay laurel fragrance sweetens shade
In cooler coastal canyons, bay laurel foliage releases its sharp, anise-like scent as temperatures climb.
Day 167 of 365 · Wedge 34 of 72
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
September is Brisbane's warmest stretch (~63°F) and January its coldest (~52°F); precipitation crests in December at 4.8 inches and ebbs in July to 0.0 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 52° | 4.4″ | 8 |
| February | 54° | 4.4″ | 8 |
| March | 56° | 3.1″ | 7 |
| April | 56° | 1.6″ | 4 |
| May | 58° | 0.7″ | 2 |
| June | 60° | 0.2″ | 1 |
| July | 60° | 0.0″ | 0 |
| August | 62° | 0.1″ | 0 |
| September | 63° | 0.1″ | 0 |
| October | 62° | 0.9″ | 2 |
| November | 57° | 2.6″ | 5 |
| December | 53° | 4.8″ | 8 |
Regional context
In Brisbane, NOAA NCEI 1991-2020 normals put January near 52°F and July near 60°F — a 8°F seasonal arc — with about 22.9 inches of precipitation over 45 rainy or snowy days.
Precipitation in Brisbane peaks in the cool season: December averages 4.8 inches across 8.0 storm-fed days, while July bottoms out at 0.0 inches over just 0.0 rainy days. That groups Brisbane with places like South San Francisco, CA, Colma, CA and Daly City, CA on the same cool-season storm track.
With a coldest-month mean of 52°F, Brisbane stays mostly frost-free and grows year-round. The September peak near 63°F is Brisbane's real limit, pushing cool-season vegetables to spring and fall. Across Brisbane, elevation and tree cover drive a 4-7°F spread in Brisbane's overnight lows.
Similar climates: South San Francisco, CA, Colma, CA, Daly City, CA, Broadmoor, CA, San Bruno, CA.
Frequently asked
- When does it freeze in Brisbane?
- Brisbane's last spring frost lands near mid-April, and in Brisbane the first fall frost follows around mid-November.
- What is the rainy season in Brisbane?
- Brisbane sees its heaviest rain in December (around 4.8 inches), part of roughly 23 inches a year.
- What is the warmest month in Brisbane?
- September is Brisbane's warmest month, averaging about 63°F.
- What is the coldest month in Brisbane?
- Brisbane bottoms out in January, with a mean near 52°F.
- When can I start a vegetable garden in Brisbane?
- Time tomatoes in Brisbane for two weeks after mid-April; peas and greens start at Brisbane's frost line.
- How many rainy days does Brisbane get?
- Expect roughly 45 wet days a year in Brisbane.
- What hardiness zone is Brisbane?
- Brisbane sits in the USDA zone set by January lows near 52°F; the USDA ZIP tool gives the band.
- What is the 10-day forecast for Brisbane?
- Brisbane's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Brisbane?
- See this week's day-by-day rain chances for Brisbane in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Brisbane?
- Current conditions for Brisbane and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Brisbane forecast updated?
- The Brisbane forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Brisbane?
- Day length in Brisbane peaks around the June solstice — earliest sunrise and latest sunset — and is shortest near the December solstice.
- How accurate is the weather forecast for Brisbane?
- The next few days in Brisbane's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Brisbane, California has a hot-summer Mediterranean climate: January averages roughly 52°F, July about 60°F, 8°F between them.
In a typical year Brisbane records about 23 inches of precipitation on around 45 days.
Latitude 37.7°N gives Brisbane its 8°F swing, and with it the rhythm of Brisbane's growing season.
ZIP codes in Brisbane
- 94005